Introduction to File System

The file system is the main means of file storage in UNIX. Every file system houses directories, that, as a group, could be placed almost anywhere in the UNIX directory tree. The highest level of the directory tree, the root directory, starts at /. Within Linux the file system which is used is ext2.

A file system, thus keeps its data on disks. After that these disks are broken into partitions, every varying in size depending on the requirement of the administrator. It is on each partition in which the original file system is laid out. Inside the file system, there are subdirectories, directories and, at last, the individual files.